Voltage regulator, control circuit of voltage regulator and control method of voltage regulator
A technology of voltage stabilizer and control terminal, applied in control/regulation systems, instruments, regulating electrical variables, etc., can solve the problems of low dropout voltage stabilizer output voltage stability and power supply rejection ratio need to be improved
Active Publication Date: 2021-02-09
SHENZHEN GOODIX TECH CO LTD
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, affected by process factors and leakage current, the output voltage stability and power supply rejection ratio of low dropout regulators still need to be improved
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0084]Certain terms are used in the specification and preceding claims to refer to particular components. Those skilled in the art should understand that manufacturers may use different terms to refer to the same component. This description and the previous claims do not use the difference in name as the way to distinguish components, but the difference in function of the components as the basis for distinction. "Includes" mentioned throughout the specification and the preceding claims is an open-ended term, so it should be interpreted as "including but not limited to". Furthermore, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means. Two devices.
[0085]...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A voltage regulator (100), and a control circuit and a control method for the voltage regulator (100). The voltage regulator (100) comprises an amplifier (120), a charge pump circuit (242), a first transistor (M1), and a regulated voltage output end (NR). A first input end (NI1) and a second input end (NI2) of the amplifier (120) are respectively coupled to a first reference voltage (VR1) and a feedback voltage (VFB). An amplifier output end (NT) of the amplifier (120) is used for outputting an amplified voltage (OPV).The charge pump circuit (242) comprises a first charge pump (243) and a second charge pump (244) coupled in parallel between a voltage input end (NVI) and a voltage output end (NVO). The first charge pump (243) and the second charge pump (244) are used for alternately converting the amplified voltage (OPV) to output a driving voltage (VD) from the voltage output end (NVO). A control end (TC1) of the first transistor (M1) receives the driving voltage (VD) by means of the voltage output end (NVO). The regulated voltage output end (VR) is coupled to a first connection end (T11) of the first transistor (M1), and is used for outputting an output voltage (VOUT). The voltage regulator (100) can improve the stability of the output voltage (VOUT) and has the effect of low power consumption.
Description
technical field [0001] The present invention relates to voltage stabilizing technology, in particular to a control circuit and a control method of a voltage stabilizer which utilizes a plurality of charge pumps coupled in parallel to alternately provide driving voltage and the related voltage stabilizer. Background technique [0002] Usually, the power management system will use a low dropout regulator (LDO) to reduce the crosstalk caused by the power line. However, affected by process factors and leakage current, the output voltage stability and power supply rejection ratio of low dropout regulators still need to be improved. Furthermore, in some applications (such as digital wireless communications), signal processing operations only occur in certain time slots over a period of time. That is, the low dropout regulator does not need to be on all the time. [0003] Therefore, there is a need for an innovative voltage regulation structure, which can simultaneously meet the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/575
CPCG05F1/575
Inventor 庄朝贵徐建昌
Owner SHENZHEN GOODIX TECH CO LTD